no vagina, which means that penis, oviduct and spermatheca duct join at a common point.

These are closely allied species, in which the internal organization is in many cases more distinctive than the external aspect of the shell.

Distribution

These species occur in North America, Greenland, Europe and northern Asia.

Species

Species with the genus Vitrina include:
* Vitrina angelicae Beck, 1837
* Vitrina baudoni